Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 9 · Vastu, Griha Pravesha
वास्तु गृहप्रवेशश्च
दिनेषु यस्य देवस्य या तिथिस्तत्र तस्य च ।द्वितीयादिद्वये पंचम्यादितस्तिसृषु क्रमात् ॥ ५२६ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 526.
Set up each god on the tithi (moon day) that belongs to him. The 2nd and 3rd are good, then three in order from the 5th.
Simple meaning: Use each god's own moon day. The 2nd, 3rd and 5th to 7th days are good.
दशम्यादेश्चतसृषु पौर्णमास्यां विशेषतः ।
Days 10 to 13 and the full moon are good. So are certain stars like Hasta and Pushya.
साश्विधातृजलाधीशहरिमित्रवसुष्वपि ।
Ashvini, Rohini and a few other stars are good. Avoid Tuesday, and the Sun should be strong.
चंद्रताराबलोपेते पूर्वाह्णे शोभने दिने ।
Pick a good forenoon with a strong Moon and good rising sign. Do not use the doer's 8th sign.